Machine for applying hose to couplings.



PATBNTED MAY 2, 1905.

H. H. WELSH, JR. MACHINE FOR APPLYING HOSE T0 COUPLINGS.

' APPLIOATION FILED MAY 18, 1901.

2 SHEETS-SHEET 1.

INVENTOR,

WITNE No. 788,569. PATENTED MAY 2, 1905. H H. WELSH, JE- MACHINE FORAPPLYING HOSE T0 COUPLINGS.

APPLICATION FILED MAY 18 1901 2 SHEETS-SHEET 2.

WITNESSES UNITED STATES Patented May 2, 1905.

PATENT OFFICE.

HARVEY H. WELSH, JR, OF I'VILMERDING,

PENNSYLVANIA, ASSIGNOR TO THE WESTINGHOUSE AIR BRAKE COMPANY, OFPITTSBURG, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA.

MACHINE FOR APPLYING HOSE TO COUPLINGS.

SPECIFICATION forming part of Letters Patent N 0. 788,569, dated May 2,1905, Application filed May 18, 1901. Serial No. 60,839.

To N/ZZ whorrt it may concern.-

Be it known that I, HARVEY H. WELSH, Jr. a citizen of the United States,residing in Wilmerding, county of Allegheny, State of Pennsylvania, haveinvented or discovered a certain new and useful Improvement in Machinesfor Applying Hose to Couplings, of which improvement the following is aspecification.

My invention relates to machines for apply- IO ing hose to couplings forair-brake or other apparatus, and has for its object to provide a deviceby means of which the end of the hose may be readily secured to theshank of the coupling. In order to secure a tight fit be- 5 tween thehose and the coupling, the interior diameter of the hose is usuallysomewhat less than the outer diameter of the shank of the coupling andthe end of the hose will be slightly expanded when the hose and couplingare forced together.

My invention consists in an improved device for forcing the end of thehose and the shank of the coupling together and also in means forexpanding the end of the hose as it 5 is being forced onto the shank ofthe coupling; and my invention further consists in certain combinationsand arrangement of parts, as hereinafter described and claimed.

In the accompanying drawings, Figure 1 is 3 a longitudinal section of myimproved machine, a part thereof being broken away. Fig. 2 is atransverse section taken on the line 00 w of Fig. 1. Fig. 3 is atransverse section, on a larger scale, taken on the line :2] 1/ of Fig.1.

Fig. 4 is a View showing the clamp used for holding the hose inposition, and Fig. 5 a side view showing the parts assembled inoperating position.

The machine is provided with a base-plate 4 1, which may be secured on abench or in any convenient position for working. On the baseplate 1 ismounted the standard 2, which car-- ries at its upper end the projectingarm or spindle 3, upon which the hose is adapted to be placed. Thespindle has ascrew-threadcd end which projects through a hole in theupper part of the standard, and it is also provided With a fixed collar4 and nut 5, by means of which it is clamped in position. The spindle ishollow for its entire length, and through the bore extends the rod 6,which projects out at both ends of the spindle, the rear end beingscrew-threaded and the front end having the conical head or spreader 12.In the front end of the spindle 3 the bore through which the rod 6extends is enlarged for a short distance, forming the cylindrical recess7 in which is located the opening 8. Three radial slots 9 are formed inthe end of the spindle, and in the end of each slot is pivoted a sectionof the expander 11. A collar 10 is located on the rod 6 in the recess 7and is provided with radial extensions or beveled faced wings 30, whichproject into the slots 9 and are adapted to slide therein.

The radially-adjustable expander 11 is composed of three pivotedsections, the forward ends of which together form substantially a hollowcylindrical extension of the spindle 3 when in their contractedposition, as shown in Fig. 1 and also indicated in dotted lines in Fig.3. The rear part of each section of the expander consists of a narrowstrip which extends into a slot 9 of the spindle and bears upon theinclined surface of radial projections or wings 30 of the collar 10. Theouter ends of the cylindrical portions of the sections bear upon theconical surface of the head 12 of the rod 6, so that as the head isdrawn inward the cylindrical parts of the sections will be spread apartand the collar 10 will be forced inward, compressing the spring 8. Onthe screw-threaded end of the rod 6 is adjustably mounted a threadedcollar or nut 13, having slots 14 formed in opposite sides and adaptedto receive the bifurcated ends of the lever 20, Which is pivoted on thepin 17 in an opening of the bracket 15, which is secured to the upedupon the pin 17 and has one square shoulder 37, which bears against thebody of the lever 20, so that as the lever 18 swings to the left itengages lever 20 by should-er 37 and turns it to the right-that is, bothparts move together as one lever-but the rounded corner 31 of lever 18allows it to turn freely right standard 2. The lever 18 is alsopivottoward the right without moving the upper lever 20. A spring 19normally tends to keep the shoulder 37 of the lever 18 bearing againstthe body of the lever 20. A spring 16 is located between the nut 13 andan upward extension of the bracket 15 and tends to force the rod 6 withits head 1.2 outward until the nut 13 rests against the inner end of thespindle 3. The expander is then in its contracted position, as shown inFig. 1, for the spring 8 forces the collar 10 with its beveled facedwings under the inner ends of the pivoted sections of the expander 11.

The power-cylinder 21 is mounted on the base-plate 1 and is providedwith piston 22, piston-rod 23, and return-spring 29. The piston-rod 23extends through an opening 28 in the standard 2 and is attached to thesliding table 25, which moves in guides 27 on the base 26 beneath thespindle 3. Collar 24 is secured on the piston-rod 23 and is so locatedthat as it moves back and forth in its path it will engage with thelower end of the lever 18.

The clamp 32, as shown in Fig. 4, is composed of two parts or blocks 33and 34, horizontally hinged together and provided with an opening 36between them of the proper diameter for holding the hose. A handle 35 isattached to the upper block 34, by means of which the clamp may beopened and closed. The clamp 32 is to be secured in position on thesliding table 25, and the lower block 33 is of the proper thickness, sothat when the hose is placed in position on the spindle 3 it may besecurely clamped in the opening 36 between the two parts of the clamp.The length of the spindle is sufficient to accommodate the hose betweenthe collar 4 and the expander 11. The spindle is of sufiiciently smalldiameter to allow the hose to slide loosely thereon when carried by thehose-clamp 32. The shank of the coupling 38 is indicated in dotted linesin Fig. 1.

The operation is then as follows: The clamp 32 being open, the hose 40is placed on the spindle 3 in such position that its outer end islocated about at the end of the spindle. The spindle is of slightlysmaller diameter than the interior of the hose to permit free movementthereof. The coupling 38 is then placed with its shank against the endof the head of the expander, as shown in Fig. 1, in position to have thehose forced thereon ,the coupling being securely held in this positionby any convenient means. The clamp is then closed upon thehose and airor other fluid under pressureadmitted to the cylinder 21. As the piston22 moves forward, compressing spring 29, the

collar 24 engages the lower end of lever 18, turning it to the left andby means of shoulder 37 turning the upper lever 20 to the right. Thiscarries nut 13 with rod 6 and head 12 to the right, compressing spring16 and spreading open the sections of the expander 11. At the same timethe hose is moved to the left on the spindle 3, since it is secured inthe clamp 33, which is carried on the sliding table 25. The sections ofthe expander being spread apart, the end of the hose will be expanded asit passes over the expander 11 onto the shank of the coupling 38, andthen the forcing of the hose onto the coupling is quickly and easilyaccomplished. hen the end of the hose arrives at the flange of thecoupling. the collar 24 has passed the lower trip-lever 18, releasingthe spring 16, which then forces the nut13, rod 6, and head 12 forwardto the position shown in Fig. 1. The expander 11 is at the same timecontracted by means of spring 8, as before described, and the hose withcoupling attached may now be readily removed from the spindle by openingthe clamp 32. The air or other fluid under pressure is then permitted toescape from the cylinder 21, and the spring 29 returns the piston 22 toits first position. As the nut 24 passes the lever 18 on its returnstroke the lever 18 turns freely on the pivot 17 without moving upperlever 20, as the rounded corner 31 turns under the body of lever 20without interfering therewith. Another hose may now be applied and theoperation repeated.

WVhat I claim as new, and desire to secure by Letters Patent, is

1. In amachine for applying hose to couplings, the combination, of anadjustable expander for the end of the hose and means for forcing thehose and coupling together.

2. In a-machine for applying hose to couplings, the combination, of anadjustable expander for the end of the hose, means for forcing the hoseand coupling together and means for releasing the expander.

3. In a machine'for applying hose to couplings, the combination, of anarm for carrying the hose, an expander for the end of the hose and meansfor forcing the hose onto the shank of the coupling.

4. In a machine for applying hose to couplings, the combination, of anarm for carrying the hose, an expander for the end of the hose, meansfor forcing the hose and coupling together and means for automaticallyreleasing the expander.

5. In a machine for applying hose to couplings, the combination, of anarm for carrying the hose, an expander on said arm, means for spreadingand releasing the expander and means for forcing the hose onto thecoupling.

6. In a machine for applying hose to couplings, the combination, of anarm for carrying the hose, an expander, a spreader for the expanderoperated through the arm and means for forcing the hose and couplingtogether.

7. In a machine for applying hose to couplings, the combination, of anexpander for the end of the hose and means for automatically spreadingand releasing the expander as the hose and coupling are forced together.

8. In a machine for applying hose to couplings, the combination, of anarm or spindle for the hose, a clamp for securing the hose over thespindle, an expander on the spindle and means for moving the clampwhereby the end of the hose may be forced'over the expander onto thecoupling.

9. In a machine for applying hose to couplings, the combination, of ahollow arm or spindle for carrying the hose, an expander on the end ofthe arm, a rod extending through the hollow arm and having a head foropening the expander, means for operating the rod and means for forcingthe hose onto the coupling.

my hand.

H. H. WELSH, JR. Witnesses:

E. A. WRIGHT, R. F. EMERY.

